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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
Nylon bushings on adjustable blades prevent metal on metal rattle
stair risers
Available 4" thru 52" round
Collar sizes available in 6”–10”
Hinged perforated face with screwdriver access to release
Parallel Volume Damper Low Leak 3000PLL-58X44 Specialty Products Nylon bushings on adjustable bladesh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3. Options * 3000 PLL Low Leak Air Control
